| /* |
| * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * Redistributions of source code must retain the above copyright notice, this |
| * list of conditions and the following disclaimer. |
| * |
| * Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * |
| * Neither the name of ARM nor the names of its contributors may be used |
| * to endorse or promote products derived from this software without specific |
| * prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include <plat_arm.h> |
| |
| /* |
| * On ARM CSS platforms, by default, the system power level is treated as the |
| * highest. The first entry in the power domain descriptor specifies the |
| * number of system power domains i.e. 1. |
| */ |
| #define CSS_PWR_DOMAINS_AT_MAX_PWR_LVL ARM_SYSTEM_COUNT |
| |
| /* |
| * The CSS power domain tree descriptor for dual cluster CSS platforms. |
| * The cluster power domains are arranged so that when the PSCI generic |
| * code creates the power domain tree, the indices of the CPU power |
| * domain nodes it allocates match the linear indices returned by |
| * plat_core_pos_by_mpidr() i.e. CLUSTER1 CPUs are allocated indices |
| * from 0 to 3 and the higher indices for CLUSTER0 CPUs. |
| */ |
| const unsigned char arm_power_domain_tree_desc[] = { |
| /* No of root nodes */ |
| CSS_PWR_DOMAINS_AT_MAX_PWR_LVL, |
| /* No of children for the root node */ |
| ARM_CLUSTER_COUNT, |
| /* No of children for the first cluster node */ |
| PLAT_ARM_CLUSTER1_CORE_COUNT, |
| /* No of children for the second cluster node */ |
| PLAT_ARM_CLUSTER0_CORE_COUNT |
| }; |
| |
| |
| /****************************************************************************** |
| * This function implements a part of the critical interface between the psci |
| * generic layer and the platform that allows the former to query the platform |
| * to convert an MPIDR to a unique linear index. An error code (-1) is |
| * returned in case the MPIDR is invalid. |
| *****************************************************************************/ |
| int plat_core_pos_by_mpidr(u_register_t mpidr) |
| { |
| if (arm_check_mpidr(mpidr) == 0) |
| return plat_arm_calc_core_pos(mpidr); |
| |
| return -1; |
| } |